Improvement in spring bed-bottoms



J. E. LORD.

SPRINGBED-BOTTOM.

N.174;080 Patented Feb. 29, 1876.

u. PE'TERS.

. Bottoms; and I declare NITED STATES JOSEPH E, LORD, OF QUINCY,ILLINOIS.

IMPROVEMENT IN SPRING BED-BOTTOMS.

Specification forming part of Letters Patent N 0. 174,080, June 24,1875.

To all whom it may concern Be it known that I, JOSEPH E. LORD, of

the city of Quincy, in the county of Adams and State of Illinois, haveinvented certain new and useful Improvements in, Spring Bedthe followingto be a full, clear, and exact description of the same, reference beinghad to the accompanying drawing, in which Figure 1 isan isometricalrepresentation, and Bi g. 2 an elevation, of an improved link. Theinvention relates to that class of metalspring bedbottoms consisting oflattice or basket work top and bottom frames, having metal springsbetween and connecting the same. 7 a

The object of my invention is to provide a more elastic surface forthe'mattress or bed to rest upon, and to provide a cheap, simple, anddurable method of fastening or linking the upper part of the springstogether, the invention being an improvement upon. the springbed-bottomsfor which a patent was granted to E. Kreighoif, July 9,1867; also, uponthe spring bed-bottoms for .Which a patent Was-granted to me, Joseph E.Lord,

hearing date February 28, 157 l.

A, in the accompanying drawing, represents v the upper and lower frames,which are composed of four pieces or straps of metal secured at thecorners by means of rivets or other equivalent fastening. Upon the lowerframe are longitudinal and transverse slats or straps B, crossing eachother at right angles. At each intersection of the slats are secur'edthelower ends ofthe metal springs, the outside rows being of the shapeknown as the double. cone spiral spring,iwhich' are coiled upon asmall-sized mandrehto give a greater degree of stifl'ness and support tothe upper frame.

dated February 29, 1876; application filed The inside rows of springsare conical in shape,

and are secured at their apex to the intersec tion a of the slats. Theupper frame is constructed in a similar znannerto thelower one, and hastwo longitudinal and two transverse l slats, G, joined to the frame A insuch a manner as 'to form'an inside concentric square. Upon this doubleframeare fastened, at regular intervals, (the spaces corresponding withthe spaces between the lattice-work of the lower frame,) short straps ofmetal D. At their intersection with the straps O or inside frame; aresecured the upper ends of theoutside rows of double-cone springs,.andthe ends of the straps next to the inner rows of springs are bent intohooks, and are thus secured to the periphery of the top coilsof thelarger springs. The upper coils of the inside rows of springs are linkedto each other by means of the B-shaped link E.

This construction allows the springs to be depressed vertically almostindependent of each other by the flexibility of the link-couplings, andyet, each row of'springs being attached both in a longitudinal andtransverse direction to the frames A and (J by means of the links E andstraps D, the springs are retained in a vertical position, the outeredge of the mattress is properly supported, and all lateral motion isprevented.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the concentric frames A and 0, straps 1),springs F,and links E, the whole constructed, arranged, and operatingsubstantially as described.

JOSEPH E. LORD.

Witnesses:

Tnos. B. HARRISON, (J. E. PIERCE.

